The Hennepin County Sheriff's Office said in a news release that authorities recovered Gulbrandson's body at 9:30 a.m.

Gulbrandson had been swimming with three friends sometime before 5 a.m. Authorities said the group was swimming from the shore to the island, but Gulbrandson told his friends he didn't want to swim to the island and said he would return to shore.

The friends returned to shore later and couldn't find him. They called 911, and the sheriff's department's dive team conducted a search.